<template>
  <div>
    <el-tabs tab-position="left" style="height: 100%;">
      <el-tab-pane label="用户管理">
        用户信息管理
        <div>
          <el-upload
            class="avatar-uploader"
            action="https://jsonplaceholder.typicode.com/posts/"
            :show-file-list="false"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload">
            <img v-if="imageUrl" :src="imageUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
          </el-upload>
        </div>
      </el-tab-pane>
      <el-tab-pane label="密码管理">配置管理</el-tab-pane>
      <el-tab-pane label="名称管理">角色管理</el-tab-pane>
      <el-tab-pane label="其他">定时任务补偿</el-tab-pane>
    </el-tabs>
  </div>
</template>

<script>
export default {
  name: 'SettingComponent',
  data () {
    return {
      imageUrl: ''
    }
  },
  methods: {
    handleAvatarSuccess (res, file) {
      this.imageUrl = URL.createObjectURL(file.raw)
    },
    beforeAvatarUpload (file) {
      const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 6

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 6MB!')
      }
      return isJPG && isLt2M
    }
  }
}
</script>

<style scoped>
  .avatar-uploader el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
